or another parent or another town, from the grief that's visited tucson, aurora, and oak creek and newtown, and communities from columbine to blacksberg before that, then surely we have an obligation to try. >> rose: joining me now is michael bloomberg. he's the mayor of new york city and he's also the co-chair of mayors against illegal guns. he's long been an outspoken advocate of gun control. he is now call on the nation's lawmakers to make reducing gun violence their top priority. here's what he said earlier today at a city hall press conference. >> if the massacre in tucson wasn't enough to make our national leaders act, and if the more recent bloodshed in aurora, colorado, and oak creaks wisconsin, and portland oregon and other cities and towns wasn't enough, perhaps the slaughter of innocence at sandy hook elementary school will at long last be enough. millions of americans hope that is true. but it's not enough for us to hope. we have to speak up. we have made our voices heard and hold washington accountable for facing up to the epidemic of gun violence in our country. if this momen